General Dynamics’ next generation Squad Weapon- the RM277
The Army is looking for a weapon to replace both the M4 and the M247. It will be chambered in 6.8mm (or .277 inch). This weapon is a bullpup. A big gamble for General Dynamics since the Army has never went that rout in the past. Sig Sauer and Texton are also gunning for this contract.
Check out the article at the link